<?php
$TABLE = $_GET["select"];
$table_status = table_status($TABLE);
$indexes = indexes($TABLE);
$fields = fields($TABLE);
$foreign_keys = column_foreign_keys($TABLE);

$rights = array(); // privilege => 0
$columns = array(); // selectable columns
$text_length = null;
foreach ($fields as $key => $field) {
	$name = $adminer->fieldName($field);
	if (isset($field["privileges"]["select"]) && $name != "") {
		$columns[$key] = html_entity_decode(strip_tags($name));
		if (ereg('text|blob', $field["type"])) {
			$text_length = $adminer->selectLengthProcess();
		}
	}
	$rights += $field["privileges"];
}

list($select, $group) = $adminer->selectColumnsProcess($columns, $indexes);
$where = $adminer->selectSearchProcess($fields, $indexes);
$order = $adminer->selectOrderProcess($fields, $indexes);
$limit = $adminer->selectLimitProcess();
$from = ($select ? implode(", ", $select) : "*") . "\nFROM " . idf_escape($TABLE) . ($where ? "\nWHERE " . implode(" AND ", $where) : "");
$group_by = ($group && count($group) < count($select) ? "\nGROUP BY " . implode(", ", $group) : "") . ($order ? "\nORDER BY " . implode(", ", $order) : "");

if ($_POST && !$error) {
	$where_check = "(" . implode(") OR (", array_map('where_check', (array) $_POST["check"])) . ")";
	$primary = ($indexes["PRIMARY"] ? ($select ? array_flip($indexes["PRIMARY"]["columns"]) : array()) : null); // empty array means that all primary fields are selected
	foreach ($select as $key => $val) {
		$val = $_GET["columns"][$key];
		if (!$val["fun"]) {
			unset($primary[$val["col"]]);
		}
	}
	if ($_POST["export"]) {
		dump_headers($TABLE);
		dump_table($TABLE, "");
		if ($_POST["format"] != "sql") { // Editor doesn't send format
			$row = array_keys($fields);
			if ($select) {
				$row = array();
				foreach ($select as $val) {
					$row[] = (ereg('^`.*`$', $val) ? idf_unescape($val) : $val); //! columns looking like functions
				}
			}
			dump_csv($row);
		}
		if (!is_array($_POST["check"]) || $primary === array()) {
			dump_data($TABLE, "INSERT", "SELECT $from" . (is_array($_POST["check"]) ? ($where ? " AND " : " WHERE ") . "($where_check)" : "") . $group_by);
		} else {
			$union = array();
			foreach ($_POST["check"] as $val) {
				// where is not unique so OR can't be used
				$union[] = "(SELECT" . limit("$from " . ($where ? "AND " : "WHERE ") . where_check($val) . $group_by, 1) . ")";
			}
			dump_data($TABLE, "INSERT", implode(" UNION ALL ", $union));
		}
		exit;
	}
	if (!$adminer->selectEmailProcess($where, $foreign_keys)) {
		if ($_POST["save"]) { // edit
			$result = true;
			$affected = 0;
			$query = idf_escape($TABLE);
			$set = array();
			if (!$_POST["delete"]) {
				foreach ($columns as $name => $val) { //! should check also for edit or insert privileges
					$val = process_input($fields[$name]);
					if ($val !== null) {
						if ($_POST["clone"]) {
							$set[idf_escape($name)] = ($val !== false ? $val : idf_escape($name));
						} elseif ($val !== false) {
							$set[] = idf_escape($name) . " = $val";
						}
					}
				}
				$query .= ($_POST["clone"] ? " (" . implode(", ", array_keys($set)) . ")\nSELECT " . implode(", ", $set) . "\nFROM " . idf_escape($TABLE) : " SET\n" . implode(",\n", $set));
			}
			if ($_POST["delete"] || $set) {
				$command = "UPDATE";
				if ($_POST["delete"]) {
					$command = "DELETE";
					$query = "FROM $query";
				}
				if ($_POST["clone"]) {
					$command = "INSERT";
					$query = "INTO $query";
				}
				if ($_POST["all"] || ($primary === array() && $_POST["check"]) || count($group) < count($select)) {
					$result = queries($command . " $query" . ($_POST["all"] ? ($where ? "\nWHERE " . implode(" AND ", $where) : "") : "\nWHERE $where_check"));
					$affected = $connection->affected_rows;
				} else {
					foreach ((array) $_POST["check"] as $val) {
						// where is not unique so OR can't be used
						$result = queries($command . limit1($query . "\nWHERE " . where_check($val)));
						if (!$result) {
							break;
						}
						$affected += $connection->affected_rows;
					}
				}
			}
			queries_redirect(remove_from_uri("page"), lang('%d item(s) have been affected.', $affected), $result);
			//! display edit page in case of an error
		} elseif (!$_POST["import"]) { // modify
			$result = true;
			$affected = 0;
			foreach ($_POST["val"] as $unique_idf => $row) {
				$set = array();
				foreach ($row as $key => $val) {
					$key = bracket_escape($key, 1); // 1 - back
					$set[] = idf_escape($key) . " = " . $connection->quote($adminer->editVal($val, $fields[$key]));
				}
				$result = queries("UPDATE" . limit1(idf_escape($TABLE) . " SET " . implode(", ", $set) . " WHERE " . where_check($unique_idf) . ($where ? " AND " . implode(" AND ", $where) : ""))); // can change row on a different page without unique key
				if (!$result) {
					break;
				}
				$affected += $connection->affected_rows;
			}
			queries_redirect(remove_from_uri(), lang('%d item(s) have been affected.', $affected), $result);
		} elseif (is_string($file = get_file("csv_file", true))) {
			$file = preg_replace("~^\xEF\xBB\xBF~", '', $file); //! character set
			$result = true;
			$cols = array_keys($fields);
			preg_match_all('~(?>"[^"]*"|[^"\\r\\n]+)+~', $file, $matches);
			$affected = count($matches[0]);
			begin();
			$separator = ($_POST["separator"] == "csv" ? "," : ";");
			foreach ($matches[0] as $key => $val) {
				preg_match_all("~((\"[^\"]*\")+|[^$separator]*)$separator~", $val . $separator, $matches2);
				if (!$key && !array_diff($matches2[1], $cols)) { //! doesn't work with column names containing ",\n
					// first row corresponds to column names - use it for table structure
					$cols = $matches2[1];
					$affected--;
				} else {
					$set = "";
					foreach ($matches2[1] as $i => $col) {
						$set .= ", " . idf_escape($cols[$i]) . " = " . ($col == "" && $fields[$cols[$i]]["null"] ? "NULL" : $connection->quote(str_replace('""', '"', preg_replace('~^"|"$~', '', $col))));
					}
					$set = substr($set, 1);
					$result = queries("INSERT INTO " . idf_escape($_GET["select"]) . " SET$set ON DUPLICATE KEY UPDATE$set");
					if (!$result) {
						break;
					}
				}
			}
			if ($result) {
				queries("COMMIT");
			}
			queries_redirect(remove_from_uri("page"), lang('%d row(s) have been imported.', $affected), $result);
			queries("ROLLBACK");
		} else {
			$error = upload_error($file);
		}
	}
}

$table_name = $adminer->tableName($table_status);
page_header(lang('Select') . ": $table_name", $error);
session_write_close();

$set = null;
if (isset($rights["insert"])) {
	$set = "";
	foreach ((array) $_GET["where"] as $val) {
		if (count($foreign_keys[$val["col"]]) == 1 && ($val["op"] == "="
			|| (!$val["op"] && !ereg('[_%]', $val["val"])) // LIKE in Editor
		)) {
			$set .= "&set" . urlencode("[" . bracket_escape($val["col"]) . "]") . "=" . urlencode($val["val"]);
		}
	}
}
$adminer->selectLinks($table_status, $set);

if (!$columns) {
	echo "<p class='error'>" . lang('Unable to select the table') . ($fields ? "." : ": " . error()) . "\n";
} else {
	echo "<form action='' id='form'>\n";
	echo "<div style='display: none;'>";
	hidden_fields_get();
	echo (DB != "" ? '<input type="hidden" name="db" value="' . h(DB) . '">' : ""); // not used in Editor
	echo '<input type="hidden" name="select" value="' . h($TABLE) . '">';
	echo "</div>\n";
	$adminer->selectColumnsPrint($select, $columns);
	$adminer->selectSearchPrint($where, $columns, $indexes);
	$adminer->selectOrderPrint($order, $columns, $indexes);
	$adminer->selectLimitPrint($limit);
	$adminer->selectLengthPrint($text_length);
	$adminer->selectActionPrint($text_length);
	echo "</form>\n";
	
	$page = $_GET["page"];
	if ($page == "last") {
		$found_rows = $connection->result("SELECT COUNT(*) FROM " . idf_escape($TABLE) . ($where ? " WHERE " . implode(" AND ", $where) : ""));
		$page = floor(($found_rows - 1) / $limit);
	}

	$query = "SELECT" . limit((intval($limit) && $group && count($group) < count($select) && $driver == "sql" ? "SQL_CALC_FOUND_ROWS " : "") . $from . $group_by, ($limit != "" ? intval($limit) : null), ($page ? $limit * $page : 0), "\n");
	echo $adminer->selectQuery($query);
	
	$result = $connection->query($query);
	if (!$result) {
		echo "<p class='error'>" . error() . "\n";
	} else {
		if ($driver == "mssql") {
			$result->seek($limit * $page);
		}
		$email_fields = array();
		echo "<form action='' method='post' enctype='multipart/form-data'>\n";
		$rows = array();
		while ($row = $result->fetch_assoc()) {
			$rows[] = $row;
		}
		// use count($rows) without LIMIT, COUNT(*) without grouping, FOUND_ROWS otherwise (slowest)
		if ($_GET["page"] != "last") {
			$found_rows = (intval($limit) && $group && count($group) < count($select)
				? ($driver == "sql" ? $connection->result(" SELECT FOUND_ROWS()") : $connection->result("SELECT COUNT(*) FROM ($query) x")) // space to allow mysql.trace_mode
				: count($rows)
			);
		}
		
		if (!$rows) {
			echo "<p class='message'>" . lang('No rows.') . "\n";
		} else {
			$backward_keys = $adminer->backwardKeys($TABLE, $table_name);
			
			echo "<table cellspacing='0' class='nowrap' onclick='tableClick(event);'>\n";
			echo "<thead><tr><td><input type='checkbox' id='all-page' onclick='formCheck(this, /check/);'> <a href='" . h($_GET["modify"] ? remove_from_uri("modify") : $_SERVER["REQUEST_URI"] . "&modify=1") . "'>" . lang('edit') . "</a>";
			$names = array();
			$functions = array();
			reset($select);
			$order = 1;
			foreach ($rows[0] as $key => $val) {
				$val = $_GET["columns"][key($select)];
				$field = $fields[$select ? $val["col"] : $key];
				$name = ($field ? $adminer->fieldName($field, $order) : "*");
				if ($name != "") {
					$order++;
					$names[$key] = $name;
					echo '<th><a href="' . h(remove_from_uri('(order|desc)[^=]*|page') . '&order%5B0%5D=' . urlencode($key) . ($_GET["order"][0] == $key && !$_GET["desc"][0] ? '&desc%5B0%5D=1' : '')) . '">' . apply_sql_function($val["fun"], $name) . "</a>"; //! columns looking like functions
				}
				$functions[$key] = $val["fun"];
				next($select);
			}
			$lengths = array();
			if ($_GET["modify"]) {
				foreach ($rows as $row) {
					foreach ($row as $key => $val) {
						$lengths[$key] = max($lengths[$key], min(40, strlen(utf8_decode($val))));
					}
				}
			}
			echo ($backward_keys ? "<th>" . lang('Relations') : "") . "</thead>\n";
			foreach ($adminer->rowDescriptions($rows, $foreign_keys) as $n => $row) {
				$unique_array = unique_array($rows[$n], $indexes);
				$unique_idf = "";
				foreach ($unique_array as $key => $val) {
					$unique_idf .= "&" . (isset($val) ? urlencode("where[" . bracket_escape($key) . "]") . "=" . urlencode($val) : "null%5B%5D=" . urlencode($key));
				}
				echo "<tr" . odd() . "><td>" . checkbox("check[]", substr($unique_idf, 1), in_array(substr($unique_idf, 1), (array) $_POST["check"]), "", "this.form['all'].checked = false; formUncheck('all-page');") . (count($select) != count($group) || information_schema(DB) ? '' : " <a href='" . h(ME . "edit=" . urlencode($TABLE) . $unique_idf) . "'>" . lang('edit') . "</a>");
				foreach ($row as $key => $val) {
					if (isset($names[$key])) {
						$field = $fields[$key];
						if ($val != "" && (!isset($email_fields[$key]) || $email_fields[$key] != "")) {
							$email_fields[$key] = (is_email($val) ? $names[$key] : ""); //! filled e-mails can be contained on other pages
						}
						$link = "";
						$val = $adminer->editVal($val, $field);
						if (!isset($val)) {
							$val = "<i>NULL</i>";
						} else {
							if (ereg('binary|blob|bytea', $field["type"]) && $val != "") {
								$link = h(ME . 'download=' . urlencode($TABLE) . '&field=' . urlencode($key) . $unique_idf);
							}
							if ($val == "") {
								$val = "&nbsp;";
							} elseif ($text_length != "" && ereg('text|blob', $field["type"]) && is_utf8($val)) {
								$val = shorten_utf8($val, max(0, intval($text_length))); // usage of LEFT() would reduce traffic but complicate query - expected average speedup: .001 s VS .01 s on local network
							} else {
								$val = h($val);
							}
							
							if (!$link) { // link related items
								foreach ((array) $foreign_keys[$key] as $foreign_key) {
									if (count($foreign_keys[$key]) == 1 || count($foreign_key["source"]) == 1) {
										foreach ($foreign_key["source"] as $i => $source) {
											$link .= where_link($i, $foreign_key["target"][$i], $rows[$n][$source]);
										}
										$link = h(($foreign_key["db"] != "" ? preg_replace('~([?&]db=)[^&]+~', '\\1' . urlencode($foreign_key["db"]), ME) : ME) . 'select=' . urlencode($foreign_key["table"]) . $link); // InnoDB supports non-UNIQUE keys
										break;
									}
								}
							}
							if ($key == "COUNT(*)") { //! columns looking like functions
								$link = h(ME . "select=" . urlencode($TABLE));
								$i = 0;
								foreach ((array) $_GET["where"] as $v) {
									if (!array_key_exists($v["col"], $unique_array)) {
										$link .= h(where_link($i++, $v["col"], $v["val"], urlencode($v["op"])));
									}
								}
								foreach ($unique_array as $k => $v) {
									$link .= h(where_link($i++, $k, $v, (isset($v) ? "=" : "IS NULL")));
								}
							}
						}
						if (!$link && is_email($val)) {
							$link = "mailto:$val";
						}
						if (!$link && is_url($row[$key])) {
							$link = "http://www.adminer.org/redirect/?url=" . urlencode($row[$key]); // intermediate page to hide Referer, may be changed to rel="noreferrer" in HTML5
						}
						$id = h("val[$unique_idf][" . bracket_escape($key) . "]");
						$value = $_POST["val"][$unique_idf][bracket_escape($key)];
						$h_value = h(isset($value) ? $value : $row[$key]);
						$long = strpos($val, "<em>...</em>");
						$editable = is_utf8($val) && !$long && $rows[$n][$key] == $row[$key] && !$functions[$key];
						$text = ereg('text|blob', $field["type"]);
						echo (($_GET["modify"] && $editable) || isset($value)
							? "<td>" . ($text ? "<textarea name='$id' cols='30' rows='" . (substr_count($row[$key], "\n") + 1) . "'>$h_value</textarea>" : "<input name='$id' value='$h_value' size='$lengths[$key]'>")
							: "<td id='$id' ondblclick=\"" . ($editable ? "selectDblClick(this, event" . ($text ? ", 1" : "") . ")" : "alert('" . ($long ? lang('Increase text length to modify this value.') : lang('Use edit link to modify this value.')) . "')") . ";\">" . $adminer->selectVal($val, $link, $field)
						);
					}
				}
				$adminer->backwardKeysPrint($backward_keys, $rows[$n]);
				echo "</tr>\n"; // close to allow white-space: pre
			}
			echo "</table>\n";
		}
		
		parse_str($_COOKIE["adminer_export"], $adminer_export);
		
		if ($rows || $page) {
			$exact_count = true;
			if ($_GET["page"] != "last" && intval($limit) && count($group) >= count($select) && ($found_rows >= $limit || $page)) {
				$found_rows = $table_status["Rows"];
				if (!isset($found_rows) || $where || 2 * $page * $limit > $found_rows || ($table_status["Engine"] == "InnoDB" && $found_rows < 1e4)) {
					// slow with big tables
					ob_flush();
					flush();
					$found_rows = $connection->result("SELECT COUNT(*) FROM " . idf_escape($TABLE) . ($where ? " WHERE " . implode(" AND ", $where) : ""));
				} else {
					$exact_count = false;
				}
			}
			echo "<p class='pages'>";
			if (intval($limit) && $found_rows > $limit) {
				// display first, previous 4, next 4 and last page
				$max_page = floor(($found_rows - 1) / $limit);
				echo lang('Page') . ":" . pagination(0, $page) . ($page > 5 ? " ..." : "");
				for ($i = max(1, $page - 4); $i < min($max_page, $page + 5); $i++) {
					echo pagination($i, $page);
				}
				echo ($page + 5 < $max_page ? " ..." : "") . ($exact_count ? pagination($max_page, $page) : ' <a href="' . h(remove_from_uri() . "&page=last") . '">' . lang('last') . "</a>");
			}
			echo " (" . ($exact_count ? "" : "~ ") . lang('%d row(s)', $found_rows) . ") " . checkbox("all", 1, 0, lang('whole result')) . "\n";
			
			if (!information_schema(DB)) {
				?>
<fieldset><legend><?php echo lang('Edit'); ?></legend><div>
<input type="submit" value="<?php echo lang('Save'); ?>"<?php if (!$_GET["modify"] && !$_POST["val"]) { ?> onclick="if (!selectDblClicked) { alert('<?php echo lang('Double click on a value to modify it.'); ?>'); return false; };"<?php } ?>>
<input type="submit" name="edit" value="<?php echo lang('Edit'); ?>">
<input type="submit" name="clone" value="<?php echo lang('Clone'); ?>">
<input type="submit" name="delete" value="<?php echo lang('Delete'); ?>" onclick="return confirm('<?php echo lang('Are you sure?'); ?> (' + (this.form['all'].checked ? <?php echo $found_rows; ?> : formChecked(this, /check/)) + ')');">
</div></fieldset>
<?php
			}
			print_fieldset("export", lang('Export'));
			echo $adminer->dumpOutput(1, $adminer_export["output"]) . " " . $adminer->dumpFormat(1, $adminer_export["format"]); // 1 - select
			echo " <input type='submit' name='export' value='" . lang('Export') . "'>\n";
			echo "</div></fieldset>\n";
		}
		print_fieldset("import", lang('CSV Import'), !$result->num_rows);
		echo "<input type='hidden' name='token' value='$token'><input type='file' name='csv_file'> ";
		echo html_select("separator", array("csv" => "CSV,", "csv;" => "CSV;"), $adminer_export["format"], 1); // 1 - select
		echo " <input type='submit' name='import' value='" . lang('Import') . "'>\n";
		echo "</div></fieldset>\n";
		
		$adminer->selectEmailPrint(array_filter($email_fields, 'strlen'), $columns);
		
		echo "</form>\n";
	}
}